<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Css Setting table's width and heigth</title>
    <style>
        table,tr,th,td
        {
            border: 1px solid black;
        }

        table
        {
            width:100%;
        }

        th
        {
            height: 50px;
        }

        td
        {
            height: 120%;
            padding: 15px;
        }
    </style>

</head>
<body>
<table>
    <tr>
        <th>Firstname</th>
        <th>Lastname</th>
        <th>Savings</th>
    </tr>
    <tr>
        <td>Peter</td>
        <td>Griffin</td>
        <td>$100</td>
    </tr>
    <tr>
        <td>Lois</td>
        <td>Griffin</td>
        <td>$150</td>
    </tr>
    <tr>
        <td>Joe</td>
        <td>Swanson</td>
        <td>$300</td>
    </tr>
    <tr>
        <td>Cleveland</td>
        <td>Brown</td>
        <td>$250</td>
    </tr>
</table>

</body>
</html>